I suppose it's the way your brain maps it internally. To me, it makes sense to have the most granular things first, as those become what's important. To use ph

I suppose it's the way your brain maps it internally. To me, it makes sense to have the most granular things first, as those become what's important. To use physical addresses as an example, say I'm delivering a letter (I'm delivering this letter end-to-end by myself in this hypothetical scenario). Once I know the country, I don't need to check that information again. Once I'm down at the city level, that then becomes useless information, and so on. I'll grant that prepending "www" on every site doesn't make a great deal of sense, but when the "World Wide Web" came into existence as such, it made slightly more sense on the surface.